Q: My car instantly overheats

asked by on

I've been having issues with my car's cooling system since late May and it's only gotten worse. I've taken it to a shop and they didn't find anything wrong with it, and after burping it today and shaking it back and forth it started overheating after only a few blocks. The heater stipped working as well and only cold air comes out of it but it doesn't smell like coolant. I checked the bottom hose on the radiator and it was cold, as was the radiator itself so it seems something went out or a blockage has occured. What do the symptoms point to and how can I diagnose it?

My car has 142000 miles.
My car has an automatic transmission.

Hello. This is a common issue when the thermostat is failing. This may also be caused when the coolant fan relays are not working properly. If the thermostat is stuck closed, this may cause the coolant to not circulate properly which will of course cause the car to overheat. I would recommend having an expert from YourMechanic come to your home to diagnose your car’s overheating problem and repair or replace the thermostat if necessary.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car instantly overheats

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Vehicle overheated and messed up water pump

Hi there. The Check Engine Light came on due to the extreme temperature your vehicle reached. Your sensors will light up the Check Engine Light as a warning to shut off and cool the engine. A damaged water pump/ hoses...

Q: Clicking engine noise after low oil

If you ran the engine low on oil then you may have damaged all the bearings in the engine and the noise may be in the camshaft lobes as they can get worn from lack of lube. Your engine used...

Q: Speedometer and thermostat housing compatability between two cars.

Hello, both the '97 and '98 Festivas are "2nd generation" models, so most body parts (including the speedometer) should (no guarantee here), be compatible. Engine parts (thermostat housing) should be compatible if they were from the same engine series -...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...